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@man feas @eine snes,

.HENRY E. SHAW, 0E WEST noXBUEY, Assieme To JAMES A. Wooonnnr' 'AND scLoMoNs. GRAY, or BOSTON, MASSACHUSETTS.

Latem Parmi No. 79,263, dared June 23, 186e.

IMPROVEMENT in s TEEnnio-Arrsmi'iUs.A

setts, have invented a new and'nseful Improvement in Steering-Apparatus,of which the i'ollowingis o full, clear, and exact description,reference being had to the accompanying drawings, making la part of thisspeciiication, in".vhich-` ,Y v 1 Figure l represents o. perspectiveview of an apparatus embodying my invention.

Figure 2 isa view of thc operating-gears. l

Figure 3 is a transverse vertical sectionof a portion o f iig. 1'.

Figure is 'a modification of the mode of operating the apparatus. I

The nature of my invention, consists iu the employment, in asteering-appa ratus, of a differential gear, operating in connectionwith an eccentric-shaft, ono of the gears being held, end tho, shaft,being made to rotate, so that the other or uneonined gear will have amotion around its own centre, imparting a corresponding motionto therudder-,post and rudder, whereby the latter may bo rcadiiy turned inVany direction, and will remain in any set position, without being held`by the capstan, or secured in anyother manner, regardless of any forcebrought to bear upon *the rudder or rudder-post belowtheoperative-gears.

Referring to the drawing-s, A represents the deck of a `'essel, on whichis-placed a platform, B. C is the rudder-post, to the upper end of whichis attached a metal frame, D. Forming a part of this frame is o cylin.der, D', having a spur-gear cut-upon its external surface. E is 'acylinder, with a spur-gear uponits internal i surface, as seen in lig.2, and is attached to or forms a part of a frame or arm, E, extending tothcreor, where' it is attached to a chain or rod, It, secured to posts ll or, o ther suitable xtnres. By this means the internal spur-gear isallowed a limited oscillating motion, without rotating. To the.ends of`the chains or rods k, which' .are fastened to the arm of the gear E,are attachod'springs or somo elastic material, t', for the pnrposeofavoiding any unusual strain upon the gears and rudde'rpost, which may beoccasioned by the action of the water upon the rudder. -To thc top ofthe rudder-post C is attached a spindle, H, to which is secured thesleeve G, provided at its lower end with an eccentric portion, g, tti'ngwithin the central opening of the internal gear E, andeby. which theoscillating movement of the latter is effected. I is the wheel by whichthe rudder is operated. W

represents a wheel, by which the rudder can bo operatedby rneansfofchains or rods c, extending to any part of the vessel. I

Bc it known that I, HENRYAF. S'IIAW, of West Roxbury, in the' countyof-Norfolk, and Stato of Molssachu- By this construction of asteering-apparatus, the rudder may be very r'adihyiturned in eitherdirection, and will be iirmly held 'in any position, withoutthe-necessity ot' holding en y tothe whcel`,or any other.retainingdevices, regardless of any farce that may be brought to be'arupon the rudderot post below the operative parte,I thus avoidingaccidents, so liable to occur to thc man' at the wheel, in a rough'son'. A

In iig. 4, which'is a modification oitlio apparatus, tlio wheel W isattchcd to a shaft passing through the sleeve L', on the other end ofwhich shaft is a bevel-gear, which engages with a correspondingbevel-gear attached v to the eccentric-sleeve, that operates theexternal gear E', afs vshown in iig. 3. i i

The sleeve L' forms a part of a rigid frame, L, supported by the.spindle en tlie' rudder-post, and, extend-l ing to thercar, is provided,at its ond, with a slot, through' which works the pin onthe end of thoplntolE, and by which the same is supported 'in connection with the redsk. i By this construction a greater s teadiness is insnrcdto the.operative.popticns'othe apparatus. ,l The motion and positionof the.rudder may beindicatcd by means of a pointer, non the rudder-post and'an index-plate.

The internal gear E may be made to rotate, and the external gear D tooscillatc,linstead of operatingjas' herein specified, if desirable. lWhat I claimias my invention, and desire to secure by Letters Patent, isThe combination, with the rudder-post C, of the sleeve G, provided withthe eccentric, g, and the gears and E, substantially as and for thepurpo'se specied. e c v I The combination of -a spring with the arm ofth'c oscillatingge'ar E, substantially.- as and for tho purpose specied.I I y In testimonywhcroof, 'l have signed my name to this specificationin tho presence oftwo subscribing witnesses.

I z l lHENRY F. SHAW.v i Witnesses:

' J. H. Ansus,

E L Dyna

